Re: [PATCH 26/31] x86, pkeys: add arch_validate_pkey()

[Thomas Gleixner]

On Wed, 6 Jan 2016, Dave Hansen wrote:
> 
> From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> 
> The syscall-level code is passed a protection key and need to
> return an appropriate error code if the protection key is bogus.
> We will be using this in subsequent patches.
> 
> Note that this also begins a series of arch-specific calls that
> we need to expose in otherwise arch-independent code.  We create
> a linux/pkeys.h header where we will put *all* the stubs for
> these functions.
> 
> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>